[Hendricks266]

Reaper_Man, on 19 September 2012 - 11:41 AM, said:

I was thinking distpos/ldistpos but distxyz/ldistxyz would be fine (though it should probably be ldistxy since it only calculates 2D distances, right?).

I like yours better.

Reaper_Man, on 19 September 2012 - 11:41 AM, said:

The "power" or exponent math would be very attractive for some stuff I'm doing (expvar and expvarvar?).

I used to think this but then I realized I only wanted it for ^0.5 to do a square root and then I discovered the sqrt command. Generally you'll only want a square or cube, so you can mulvarvar 2-3 times. Much more and the int32s could overflow.

Helixhorned, on 19 September 2012 - 12:38 PM, said:

Do you need the ability to pass fractional bases or exponents? In that case, we'd need to decide where to place the implicit binary point. (Or pass numerator and denominator separately, but I guess that would be just as confusing.)

This reminds me: there are two things I have promised to add that will have to involve integer <--> float conversion for use in CON. One is a "rotatemodel" command which will be rotatesprite with additional model parameters such as pitch and roll added. The other is a userdef control for the ambient light level. Should I use the same mulscale implementation as the trig commands, use a numerator/denominator style, or something different? I like the fraction myself.

[Mblackwell]

RichardStorm, on 19 September 2012 - 03:15 PM, said:

I think you could use a whilevarn loop to emulate the exponential function (it works only with integers) and a line like this:

 ifvarl X 0 mulvar X -1 

for the "absvar" function.

Yes it works. My code is littered with things like that. It's not only a wasted cycle/computation it's longer code. It's stupid to run If-Then when you don't need to.

[Hendricks266]

Mblackwell, on 19 September 2012 - 05:36 PM, said:

Yes it works. My code is littered with things like that. It's not only a wasted cycle/computation it's longer code. It's stupid to run If-Then when you don't need to.

Unless there is a measurable impact of that you can show me, implementing expvar and absvar commands would only perform those instructions on the source side. It would by far be the most optimal way to implement them. Anything else (including going through C math.h functions) would be even slower, which is still only a relative term.

The execution of the CON VM is nowhere close to being a bottleneck. With a constant, maximum 30 game states per second performance requirement, some simple math doesn't have much impact.

[Mblackwell]

I'm speaking strictly from the CON side. It can affect performance if you do it multiple times in a row for multiple objects for multiple tics. Even if you never notice the difference up front it's always good to have optimized code, and to reduce code size and increase clarity where possible.

Dig?

[Reaper_Man]

I know most of us are used to having to use dirty little tricks like that, but I still think implementing it as a real math function is preferable.

As for floating point math, I'm well used to the dirty trick of multiplying vars by 10 or 100 depending on what decimal place I'll need access to, then diving back down when I'm done. Like I said, used to doing dirty tricks.

[Helixhorned]

Hendricks266, on 19 September 2012 - 04:47 PM, said:

This reminds me: there are two things I have promised to add that will have to involve integer <--> float conversion for use in CON. One is a "rotatemodel" command which will be rotatesprite with additional model parameters such as pitch and roll added. The other is a userdef control for the ambient light level. Should I use the same mulscale implementation as the trig commands, use a numerator/denominator style, or something different? I like the fraction myself.

The additional parameters for "rotatemodel" being angles, I suggest going the least surprising route and making them BUILD angles (0..2047). For the ambient light, scaling by 100 would be convenient, I think, so that values from 0 to 1000 correspond to r_ambientlight of 0 to 10.

[RichardStorm]

'lil bump... How to make a piercing/trepassing rpg-type projectile ?

[Mblackwell]

Helixhorned, on 20 September 2012 - 12:48 AM, said:

The additional parameters for "rotatemodel" being angles, I suggest going the least surprising route and making them BUILD angles (0..2047). For the ambient light, scaling by 100 would be convenient, I think, so that values from 0 to 1000 correspond to r_ambientlight of 0 to 10.

But you'd lose a lot of the accuracy that way (rotation). It would be better to use something similar to the z parameter so 32768 is half, 65536 is a full rotation if you want it to be flawless. However I believe you're correct and the current pitch/yaw/roll parameters accept/use -1024 to 1024

[Hendricks266]

RichardStorm, on 20 September 2012 - 04:23 AM, said:

'lil bump... How to make a piercing/trepassing rpg-type projectile ?

I believe you need to add code so that when any actor is hit by one, it shoots another one with the same values gathered from the ht* members.

[Mblackwell]

Hendricks266, on 20 September 2012 - 04:15 PM, said:

I believe you need to add code so that when any actor is hit by one, it shoots another one with the same values gathered from the ht* members.

That's correct unless you do weird tricks like change the spritestat to actor, move the actor, and then change it back to a projectile. But now I've just confused the situation.

[Fox]

Hendricks266, on 20 September 2012 - 04:15 PM, said:

I believe you need to add code so that when any actor is hit by one, it shoots another one with the same values gathered from the ht* members.

True, I did something like that with hitscan to make a Railgun. It worked very well in the end.

By the way, the Railgun in Shadow Warrior is veeery lame, while the trail spawns behind any actor (until it hits a wall), the shoot itself stops when it hits the first obstacle. So it gives the illusion of piercing, but in reality he doesn't do that.

[Hendricks266]

Fox, on 21 September 2012 - 12:08 AM, said:

By the way, the Railgun in Shadow Warrior is veeery lame, while the trail spawns behind any actor (until it hits a wall), the shoot itself stops when it hits the first obstacle. So it gives the illusion of piercing, but in reality he doesn't do that.

This is sadly true. I wanted to test the Railgun's capabilities so I made a test map with a ninja of every SW sprite pal (0-32) lined up in a very narrow corridor, with a dead end on one end and a window with a raised ledge on the other so I could shoot them with impunity. I was very disappointed when they took 33 shots to kill.

[Fox]

Also I should point out that adding a hitscan trail in Eduke32 does the same thing: the shot gives the illusion of piercing when it doesn't.

[RichardStorm]

I think to use the coolexplosion type in some ways, but it seems to be invisible, not working, or broken... Anybody knows how to use it ? I would also appreciate the completion of voices in this page of the wiki http://wiki.eduke32..../PROJ_WORKSLIKE

[Fox]

You can make a projectile like Coolexplosion1 manually.

[RichardStorm]

Quote

You can make a projectile like Coolexplosion1 manually.

What do you mean ? I set PROJ_WORKSLIKE 512 and i get nothing...

[Fox]

By default you also need to set the Hitscan or RPG type as a basis.

But I meant to make a timed projectile with animation.

[RichardStorm]

If i set 514 i just obtain a rpg type, while the coolexplosion1 runs through some sprites... making it timed doesn't help.

[Fox]

That means you can't make it work as a coolexplosion using WORKSLIKE.

To make a projectile with animated frames, use a code like this:

onevent EVENT_GAME
  ifactor PROJ
  {
    ifaction PROJFRAME1
    {
      ifactioncount 1
        action PROJFRAME2
    }
    else
    ifaction PROJFRAME2
    {
      ifactioncount 1
        action PROJFRAME3
    }
 (...)
  }
endevent

[RichardStorm]

Damn.. now i understand... "runs through shades" it's referred to an "action" effect, not the "piercing" feature... it's an ambiguous definition...
I already found how to make an animated projectile, anyway

[Fox]

CON code is so weird... I just figured that shoot command makes the cstat to 1.

[RichardStorm]

Really ? That could explain why my new devastator rockets explode on player when strafing/running (i just reduced player speed to avoid this), the 2nd rocket of the burst is actually fired with the shoot command. While i'm trying it, can you tell me if this oddity occurs also with zshoot,eshoot etc ?

[Fox]

Huh, that's a completely different matter. It would be cstat 256 that makes a projectile hit an object, and the player already has that.

The reason why the projectiles explode on you is simply because the speed of the player surpasses the projectile, making them collide.

[RichardStorm]

That only happens with second rocket, manually fired with shoot command, instead of the first rocket fired as normal. This is what i'm talking about:

state wep_devastator
...
 ifvare w_count 5 ifvarg ammo_devast 0       // w_count = player.kickback_pic
  { shoot MINIROCKET  subvar ammo_devast 1  setvar recoilstrength 15  sound DEVAST_FIRE1 }      //  the 2nd rocket
...
 setvar WEAPON4_FLAGS 0
 setvar WEAPON4_FIREDELAY 3
 setvar WEAPON4_TOTALTIME 6
 setvar WEAPON4_SHOTSPERBURST 1
 setvar WEAPON4_SHOOTS MINIROCKET       // the 1st rocket
....
ends

[blizzart]

Is there a way to make a sector with low-gravity? I'm currently working on a space map for our mod and at a specific point in the map, the gravity in several parts of the map is turned off/turned to low-gravity.
I mean something like when you move forward you more jump than actually walk. And when jumping you can jump higher than normal and sink slowly back to the ground.

Is something like this possible with EDuke32 and what do I have to look for?

[Fox]

I suppose you could try messing with jumping_counter and falling_counter.

[High Treason]

There was a tutorial for altering the jump height; http://wiki.eduke32....player%27s_jump

I used that as a guide when I implemented a similar effect. There was also one for preventing fall damage (necessary for some of this and adds potential to exploit the mechanic in the level design) but keep in mind you will need to modify these somewhat to make them do what you want.

As for modifying player movement... I can't be much help there because everything I've tried to to in relation to the players walking has had no effect.

[LeoD]

High Treason, on 22 September 2012 - 02:36 PM, said:

As for modifying player movement...

The steroids jumping effect of DukePlus might be worth having a look at.

[zazo]

Hum... Is it possible to encode the reverse command of "addweapon":
for example, duke could lose a weapon in the game. ?... when the weapon is empty or a monster steals a weapon ?...

[Danukem]

zazo, on 30 September 2012 - 02:19 PM, said:

Hum... Is it possible to encode the reverse command of "addweapon":
for example, duke could lose a weapon in the game. ?... when the weapon is empty or a monster steals a weapon ?...

Yes. Set the relevant player struct members. For example, if the weapon lost is the chaingun (weapon 3), then you could use the following code:

setplayer[THISACTOR].gotweapon 3 0 // player no longer has the chaingun
setplayer[THISACTOR].curr_weapon 0 // sets current weapon to mighty boot
setplayer[THISACTOR].ammo_amount 3 0 // takes chaingun ammo as well (optional)

You will need to use a variable if you want the weapon taken to be the current one, rather than a certain number.